“Ayanin”的意思、由来-开放百科全书

词条

Ayanin

释义

Biosynthesis
References

{{Chembox
| Watchedfields = changed
| verifiedrevid = 443408352
| Name = Ayanin
| ImageFile = Ayanin.svg
| ImageName = Chemical structure of ayanin
| IUPACName = 5-Hydroxy-2-(3-hydroxy-4-methoxyphenyl)-3,7-dimethoxychromen-4-one
| OtherNames = {{ubl|3,7,4'-Tri-O-methylquercetin|3,7,4'-Trimethylquercetin|5,3'-Dihydroxy-3,7,4'-trimethoxyflavone}}
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 4444274
| InChI = 1/C18H16O7/c1-22-10-7-12(20)15-14(8-10)25-17(18(24-3)16(15)21)9-4-5-13(23-2)11(19)6-9/h4-8,19-20H,1-3H3
| InChIKey = KPCRYSMUMBNTCK-UHFFFAOYAE
| SMILES1 = O=C1c3c(O/C(=C1/OC)c2ccc(OC)c(O)c2)cc(OC)cc3O
| ChEMBL_Ref = {{ebicite|correct|EBI}}
| ChEMBL = 74898
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/C18H16O7/c1-22-10-7-12(20)15-14(8-10)25-17(18(24-3)16(15)21)9-4-5-13(23-2)11(19)6-9/h4-8,19-20H,1-3H3
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = KPCRYSMUMBNTCK-UHFFFAOYSA-N
| CASNo = 572-32-7
| CASNo_Ref = {{cascite|correct|??}}
| CASNoOther =
| PubChem = 5280682
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 27825
| SMILES = COC1=C(C=C(C=C1)C2=C(C(=O)C3=C(C=C(C=C3O2)OC)O)OC)O
| MeSHName =
|Section2={{Chembox Properties
| C=18 | H=16 | O=7
| Appearance =
| Density = 1.454 g/mL
| MeltingPtC =
| BoilingPtC =
| Solubility =
}}

Ayanin is an O-methylated flavonol, a type of flavonoid. It is the 3,7,4'-tri-O-methylated derivative of quercetin.

It can be found in Croton schiedeanus. It can also be synthetized.^[1]

Biosynthesis

The enzyme 3,7-dimethylquercetin 4'-O-methyltransferase uses S-adenosyl methionine and rhamnazin to produce S-adenosylhomocysteine and ayanin.

References

1. ^{{cite journal | doi = 10.1002/jhet.5570130629| title = Partial methylation of quercetin: Direct synthesis of tamarixetin, ombuin and ayanin| journal = Journal of Heterocyclic Chemistry| volume = 13| issue = 6| pages = 1293–1295| year = 1976| last1 = Rao| first1 = Koppaka V.| last2 = Owoyale| first2 = Jacob A.}}

1 : O-Methylated flavonols

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